Chapter 2 Guide to the GTAP Data Base Badri Narayanan G., Betina V. Dimaranan and Robert A. McDougall The GTAP Data Base is the global data base representing the world economy for a given reference year — 2004 and 2007 for the GTAP 8 Data Base. The files comprising the GTAP Data Base are packaged with two alternative aggregation packages. The GTAP Data Base includes all the data files in the data packages, except for the time series trade data. It comprises four files: sets, parameters, main data, and energy volume data. All the files are header array files (a GEMPACK binary format) (Harrison and Pearson, 1998). GTAP 8 Data Base has one additional data file, namely, CO2 emissions data and another meta-data file. This chapter provides a guide to the components of the five GTAP Data Base files. It also covers the concordances for the 57 sectors and 129 regions of the GTAP 8 Data Base. Details about sources and construction of the individual components such as domestic data bases (or I-O tables), international data sets, and parameters, are provided in subsequent chapters. 2.1 GTAP Sets File Table 2.1 shows the arrays in the sets file. The array H1 is a list of regions. H2 lists traded commodities, so called because these goods and services can be traded between regions. In this, they contrast with the primary factors or endowment commodities, listed in H6: land, unskilled labor, skilled labor, capital, and natural resources. Capital is specified in array H9 as the capital endowment commodity, for convenience in implementing the investment theory of the model. The arrays H7 and H8 divide the endowment commodities into two groups. The mobile endowment commodities (H8) are perfectly mobile across industries within each region; the sluggish endowment commodities (H7) are imperfectly mobile or immobile. In the standard data base, skilled and unskilled labor and capital are classed as mobile, and land and natural resources as sluggish. This is suitable for long-run simulations. For short-run simulations, users may wish to move capital from H8 to H7, to treat it as sluggish rather than mobile. The remaining arrays are provided for convenience in implementing the theoretical structure of the GTAP Model. The non-savings commodities, array H3, comprise the endowment commodities, the traded commodities, and an investment good. The demanded commodities, H4, comprise endowment and traded commodities; the produced commodities, H5, comprise traded commodities and the investment good. Finally, array MARG lists the margin commodities.
Transcript
Chapter 2
Guide to the GTAP Data Base
Badri Narayanan G., Betina V. Dimaranan
and Robert A. McDougall
The GTAP Data Base is the global data base representing the world economy for a given reference
year — 2004 and 2007 for the GTAP 8 Data Base. The files comprising the GTAP Data Base are
packaged with two alternative aggregation packages. The GTAP Data Base includes all the data
files in the data packages, except for the time series trade data. It comprises four files: sets,
parameters, main data, and energy volume data. All the files are header array files (a GEMPACK
binary format) (Harrison and Pearson, 1998). GTAP 8 Data Base has one additional data file,
namely, CO2 emissions data and another meta-data file.
This chapter provides a guide to the components of the five GTAP Data Base files. It also
covers the concordances for the 57 sectors and 129 regions of the GTAP 8 Data Base. Details about
sources and construction of the individual components such as domestic data bases (or I-O tables),
international data sets, and parameters, are provided in subsequent chapters.
2.1 GTAP Sets File Table 2.1 shows the arrays in the sets file. The array H1 is a list of regions. H2 lists traded
commodities, so called because these goods and services can be traded between regions. In this,
they contrast with the primary factors or endowment commodities, listed in H6: land, unskilled
labor, skilled labor, capital, and natural resources. Capital is specified in array H9 as the capital
endowment commodity, for convenience in implementing the investment theory of the model.
The arrays H7 and H8 divide the endowment commodities into two groups. The mobile
endowment commodities (H8) are perfectly mobile across industries within each region; the
sluggish endowment commodities (H7) are imperfectly mobile or immobile. In the standard data
base, skilled and unskilled labor and capital are classed as mobile, and land and natural resources
as sluggish. This is suitable for long-run simulations. For short-run simulations, users may wish to
move capital from H8 to H7, to treat it as sluggish rather than mobile.
The remaining arrays are provided for convenience in implementing the theoretical
structure of the GTAP Model. The non-savings commodities, array H3, comprise the endowment
commodities, the traded commodities, and an investment good. The demanded commodities, H4,
comprise endowment and traded commodities; the produced commodities, H5, comprise traded
commodities and the investment good. Finally, array MARG lists the margin commodities.
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Table 2.1 Arrays in the GTAP Sets File
Name Dimension Description
H1 r Regions
H2 t Traded commodities
H3 s+m+t+1 Non-saving commodities
H4 s+m+t Demanded commodities
H5 t+1 Produced commodities
H6 s+m Endowment commodities
H7 s Sluggish endowment commodities
H8 m Mobile endowment commodities
H9 1 Capital endowment commodity
MARG g Margin commodities
TAR 2 Types of tariffs
DEC 5 Types of domestic support payments
PYS 5 Domestic support payment base types
AGRI 12 Agricultural commodities
DREG 38 Regions with domestic support data
g number of margins commodities (sectors)
m number of primary factors perfectly mobile across industries
r number of regions
s number of primary factors not perfectly mobile across industries
Users of the GTAP Model should note that the derived arrays H3, H4, and H5 are obsolete
as of gtap.tab release 5.1 (they are now derived internally in the solution program). Also obsolete
are the sluggish and mobile endowment commodity arrays H7 and H8; the sluggish/mobile
distinction is indicated with a parameter, SLUG (section 2.3). The header TAR is newly introduced
in GTAP 8 Data Base, showing the components of tariff available in the dataset in the new
additional data header VTTS. The new headers DEC, PYS, AGRI and DREG show the sets relevant
for the new additional domestic support data headers named PAYD and PYRT.
2.2.1 GTAP Regions
In the standard GTAP 8 Data Base, there are 57 commodities and 129 regions. The commodity
detail and concordance is the same as in the GTAP 7 Data Base. The regional detail has significantly
increased from the 113 regions in GTAP 7 through the inclusion of domestic data bases for several
new regions and through the revised grouping of composite regions.
Table 2.2 shows the regional definitions used in GTAP 8 Data Base. The 129 regions are
defined as aggregates of 244 countries using the GTAP standard country list (see section 2.2.2).
The alpha-3 codes defined by the International Organization for Standardization (ISO) are used as
country codes for the GTAP primary regions, i.e. regions developed from contributed domestic
data bases.
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Table 2.2 Regions in GTAP 8 Data Base
No. Code Description Code Member Countries
1 AUS Australia AUS Australia
CCK Cocos (Keeling) Islands
CXR Christmas Island
HMD Heard Island and McDonald
Islands
NFK Norfolk Island
2 NZL New Zealand NZL New Zealand
3 XOC Rest of Oceania ASM American Samoa
COK Cook Islands
FJI Fiji
FSM
Micronesia Federated States
of
GUM Guam
KIR Kiribati
MHL Marshall Islands
MNP Northern Mariana Islands
NCL New Caledonia
NIU Niue
NRU Nauru
PLW Palau
PNG Papua New Guinea
PYF French Polynesia
SLB Solomon Islands
TKL Tokelau
TON Tonga
TUV Tuvalu
VUT Vanuatu
WLF Wallis and Futuna
WSM Samoa
PCN Pitcairn
UMI
United States Minor
Outlying Islands
4 CHN China CHN China
5 HKG Hong Kong HKG Hong Kong
6 JPN Japan JPN Japan
7 KOR Korea Republic of KOR Korea Republic of
8 MNG Mongolia MNG Mongolia
9 TWN Taiwan TWN Taiwan
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No. Code Description Code Member Countries
10 XEA Rest of East Asia MAC Macao
PRK
Korea Democratic Peoples
Republic of
11 KHM Cambodia KHM Cambodia
12 IDN Indonesia IDN Indonesia
13 LAO Lao People's Democratic
Republic LAO
Lao People's Democratic
Republic
14 MYS Malaysia MYS Malaysia
15 PHL Philippines PHL Philippines
16 SGP Singapore SGP Singapore
17 THA Thailand THA Thailand
18 VNM Viet Nam VNM Viet Nam
19 XSE Rest of Southeast Asia BRN Brunei Darussalam
MMR Myanmar
TLS Timor Leste
20 BGD Bangladesh BGD Bangladesh
21 IND India IND India
22 NPL Nepal NPL Nepal
23 PAK Pakistan PAK Pakistan
24 LKA Sri Lanka LKA Sri Lanka
25 XSA Rest of South Asia AFG Afghanistan
BTN Bhutan
MDV Maldives
26 CAN Canada CAN Canada
27 USA United States of America USA United States of America
28 MEX Mexico MEX Mexico
29 XNA Rest of North America BMU Bermuda
GRL Greenland
SPM Saint Pierre and Miquelon
30 ARG Argentina ARG Argentina
31 BOL Bolivia, Plurinational
Republic of BOL
Bolivia, Plurinational
Republic of
32 BRA Brazil BRA Brazil
33 CHL Chile CHL Chile
34 COL Colombia COL Colombia
35 ECU Ecuador ECU Ecuador
36 PRY Paraguay PRY Paraguay
37 PER Peru PER Peru
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No. Code Description Code Member Countries
38 URY Uruguay URY Uruguay
39 VEN Venezuela VEN Venezuela
40 XSM Rest of South America FLK Falkland Islands (Malvinas)
GUF French Guiana
GUY Guyana
SUR Suriname
SGS South Georgia and the
South Sandwich Islands
41 CRI Costa Rica CRI Costa Rica
42 GTM Guatemala GTM Guatemala
43 HND Honduras HND Honduras
44 NIC Nicaragua NIC Nicaragua
45 PAN Panama PAN Panama
46 SLV El Salvador SLV El Salvador
47 XCA Rest of Central America BLZ Belize
48 XCB Caribbean ABW Aruba
AIA Anguilla
ANT Netherlands Antilles
ATG Antigua & Barbuda
BHS Bahamas
BRB Barbados
CUB Cuba
CYM Cayman Islands
DMA Dominica
DOM Dominican Republic
GRD Grenada
HTI Haiti
JAM Jamaica
KNA Saint Kitts and Nevis
LCA Saint Lucia
MSR Montserrat
PRI Puerto Rico
TCA Turks and Caicos Islands
TTO Trinidad and Tobago
VCT
Saint Vincent and the
Grenadines
VGB Virgin Islands British
VIR Virgin Islands U.S.
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49 AUT Austria AUT Austria
50 BEL Belgium BEL Belgium
51 CYP Cyprus CYP Cyprus
52 CZE Czech Republic CZE Czech Republic
53 DNK Denmark DNK Denmark
54 EST Estonia EST Estonia
55 FIN Finland FIN Finland
ALA Aland Islands
56 FRA France FRA France
GLP Guadeloupe
MTQ Martinique
REU Reunion
57 DEU Germany DEU Germany
58 GRC Greece GRC Greece
59 HUN Hungary HUN Hungary
60 IRL Ireland IRL Ireland
61 ITA Italy ITA Italy
62 LVA Latvia LVA Latvia
63 LTU Lithuania LTU Lithuania
64 LUX Luxembourg LUX Luxembourg
65 MLT Malta MLT Malta
66 NLD Netherlands NLD Netherlands
67 POL Poland POL Poland
68 PRT Portugal PRT Portugal
69 SVK Slovakia SVK Slovakia
70 SVN Slovenia SVN Slovenia
71 ESP Spain ESP Spain
72 SWE Sweden SWE Sweden
73 GBR United Kingdom GBR United Kingdom
74 CHE Switzerland CHE Switzerland
75 NOR Norway NOR Norway
SJM Svalbard and Jan Mayen
76 XEF Rest of EFTA ISL Iceland
LIE Liechtenstein
77 ALB Albania ALB Albania
78 BGR Bulgaria BGR Bulgaria
79 BLR Belarus BLR Belarus
80 HRV Croatia HRV Croatia
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81 ROU Romania ROU Romania
82 RUS Russian Federation RUS Russian Federation
83 UKR Ukraine UKR Ukraine
84 XEE Rest of Eastern Europe MDA Moldova Republic of
85 XER Rest of Europe AND Andorra
BIH Bosnia and Herzegovina
FRO Faroe Islands
GIB Gibraltar
MCO Monaco
MKD
Macedonia the former
Yugoslav Republic of
SMR San Marino
SRB Serbia
GGY Guernsey
IMN Isle of Man
JEY Jersey
MNE Montenegro
VAT
Holy See (Vatican City
State)
86 KAZ Kazakhstan KAZ Kazakhstan
87 KGZ Kyrgyzstan KGZ Kyrgyzstan
88 XSU Rest of Former Soviet
Union TJK Tajikistan
TKM Turkmenistan
UZB Uzbekistan
89 ARM Armenia ARM Armenia
90 AZE Azerbaijan AZE Azerbaijan
91 GEO Georgia GEO Georgia
92 BHR Bahrain BHR Bahrain
93 IRN Iran Islamic Republic of IRN Iran Islamic Republic of
94 ISR Israel ISR Israel
95 KWT Kuwait KWT Kuwait
96 OMN Oman OMN Oman
97 QAT Qatar QAT Qatar
98 SAU Saudi Arabia SAU Saudi Arabia
99 TUR Turkey TUR Turkey
100 ARE United Arab Emirates ARE United Arab Emirates
101 XWS Rest of Western Asia IRQ Iraq
JOR Jordan
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LBN Lebanon
PSE
Palestinian Territory
Occupied
SYR Syrian Arab Republic
YEM Yemen
102 EGY Egypt EGY Egypt
103 MAR Morocco MAR Morocco
104 TUN Tunisia TUN Tunisia
105 XNF Rest of North Africa DZA Algeria
LBY Libyan Arab Jamahiriya
ESH Western Sahara
106 CMR Cameroon CMR Cameroon
107 CIV Cote d'Ivoire CIV Cote d'Ivoire
108 GHA Ghana GHA Ghana
109 NGA Nigeria NGA Nigeria
110 SEN Senegal SEN Senegal
111 XWF Rest of Western Africa BEN Benin
BFA Burkina Faso
CPV Cape Verde
GIN Guinea
GMB Gambia
GNB Guinea-Bissau
LBR Liberia
MLI Mali
MRT Mauritania
NER Niger
SHN
Saint Helena, ASCENSION
AND TRISTAN DA
CUNHA
SLE Sierra Leone
TGO Togo
112 XCF Central Africa CAF Central African Republic
COG Congo
GAB Gabon
GNQ Equatorial Guinea
STP Sao Tome and Principe
TCD Chad
113 XAC South Central Africa AGO Angola
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COD
Congo the Democratic
Republic of the
114 ETH Ethiopia ETH Ethiopia
115 KEN Kenya KEN Kenya
116 MDG Madagascar MDG Madagascar
117 MWI Malawi MWI Malawi
118 MUS Mauritius MUS Mauritius
119 MOZ Mozambique MOZ Mozambique
120 TZA Tanzania United
Republic of TZA
Tanzania United Republic
of
121 UGA Uganda UGA Uganda
122 ZMB Zambia ZMB Zambia
123 ZWE Zimbabwe ZWE Zimbabwe
124 XEC Rest of Eastern Africa BDI Burundi
COM Comoros
DJI Djibouti
ERI Eritrea
MYT Mayotte
RWA Rwanda
SDN Sudan
SOM Somalia
SYC Seychelles
125 BWA Botswana BWA Botswana
126 NAM Namibia NAM Namibia
127 ZAF South Africa ZAF South Africa
128 XSC Rest of South African
Customs Union LSO Lesotho
SWZ Swaziland
129 XTW Rest of the World ATA Antarctica
ATF French Southern Territories
BVT Bouvet Island
IOT
British Indian Ocean
Territory
2.2.2 GTAP Standard Countries
A group comprised of 244 countries formed the set of standard countries in the construction of the
GTAP 8 Data Base. The identification of a set of standard countries is key to achieving the goal of
regional flexibility in the data base construction process. Regional flexibility is attained when new
regions can readily be added to the data base by simply including the new region(s) in a list of
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regions and a mapping file used in the data construction process and supplying the additional
country’s input-output table.
To achieve regional flexibility, contributors of international data sets to GTAP are
encouraged to provide the data on a country basis rather than on a GTAP region basis. This
facilitates revision of the GTAP regional classification without having to go back to the data
contributors for new, reclassified source data. The contributed data is then mapped or transformed
to apply to the set of standard countries. A mapping between the standard set of countries and the
set of GTAP regions is then used to aggregate the data (see table 2.2). The mapping file is revised
when a new region is introduced in the GTAP Data Base.
The country composition of the set of standard countries for GTAP 8 is such that it omits
no significant economies and it captures all significant information from the contributed
international data sets. We obtain a GDP estimate for each standard country for use as a scaling
factor in aggregating data sets.
2.2.3 GTAP Sectoral Classification (GSC2)
Tables 2.3 and 2.4 show the sectoral definitions used in the GTAP 8 Data Base. We define the
GTAP agricultural and food processing sectors by reference to the Central Product Classification
(CPC), as shown in table 2.3. The other GTAP sectors are defined by reference to the International
Standard Industry Classification (ISIC), as shown in table 2.4. We use the ISIC for most sectors,
because it is the reference point for sectoral classification in most I-O statistics. But for agriculture
and food processing, the ISIC does not provide the detail we need, so we use instead the CPC. The
CPC was developed by the Statistical Office of the United Nations to serve as a bridge between the
ISIC and other sectoral classifications (UN 1990, 1991).
Table 2.3 GSC2 Sectors defined by Reference to the CPC
and mustard oil and their fractions, refined but not chemically modified; other
oils obtained solely from olives and sesame oil, and their fractions, whether or
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Table 2.3 GSC2 Sectors defined by Reference to the CPC
GSC2
Numbe
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Code CPC Description
No. Code
not refined, but not chemically modified
2166 Maize (corn) oil and its fractions, not chemically modified
2167 Palm, coconut, palm kernel, babassu and linseed oil and their fractions, refined but
not chemically modified; castor, tung and jojoba oil and fixed vegetable fats
and oils (except maize oil) and their fractions n.e.c., whether or not refined, but
not chemically modified
2168 Margarine and similar preparations
2169 Animal or vegetable fats and oils and their fractions, partly or wholly
hydrogenated, inter-esterified, re-esterified or elaidinised, whether or not
refined, but not further prepared
217 Cotton linters
218 Oil-cake and other solid residues resulting from the extraction of vegetable fats or
oils; flours and meals of oil seeds or oleaginous fruits, except those of mustard;
vegetable waxes, except triglycerides; degras; residues resulting from the
treatment of fatty substances or animal or vegetable waxes
22 mil 22 Dairy products
23 pcr 2316 Rice, semi- or wholly milled
24 sgr 235 Sugar 25 ofd 212 Prepared and preserved fish
213 Prepared and preserved vegetables
214 Fruit juices and vegetable juices
215 Prepared and preserved fruit and nuts
2311 Wheat or meslin flour
2312 Cereal flours other than wheat or meslin
2313 Groats, meal and pellets of wheat
2314 Cereal groats, meal and pellets n.e.c.
2315 Other cereal grain products (including corn flakes)
2317 Other vegetable flours and meals
2318 Mixes and doughs for the preparation of bakers’ wares
232 Starches and starch products; sugars and sugar syrups n.e.c.
233 Preparations used in animal feeding
234 Bakery products
236 Cocoa, chocolate and sugar confectionery
237 Macaroni, noodles, couscous and similar farinaceous products
239 Food products n.e.c.
26 b_t 24 Beverages
25 Tobacco products
n.e.c. Not elsewhere classified
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Table 2.4 GSC2 Sectors defined by Reference to the ISIC, Rev. 3
GSC2 Code ISIC3 Description No. Code
14 fsh 015 Hunting, trapping and game propagation including related service
activities 05 Fishing, operation of fish hatcheries and fish farms; service activities
incidental to fishing
15 coa 101 Mining and agglomeration of hard coal
102 Mining and agglomeration of lignite
103 Mining and agglomeration of peat
16 oil 111 Extraction of crude petroleum and natural gas (part)
112 Service activities incidental to oil and gas extraction excluding surveying
(part)
17 gas 111 Extraction of crude petroleum and natural gas (part)
112 Service activities incidental to oil and gas extraction excluding surveying
(part)
18 omn 12 Mining of uranium and thorium ores
13 Mining of metal ores 14 Other mining and quarrying
27 tex 17 Manufacture of textiles
243 Manufacture of man-made fibres
28 wap 18 Manufacture of wearing apparel; dressing and dyeing of fur
29 lea 19 Tanning and dressing of leather; manufacture of luggage, handbags,
saddlery, harness and footwear
30 lum 20 Manufacture of wood and of products of wood and cork, except furniture;
manufacture of articles of straw and plaiting materials
31 ppp 21 Manufacture of paper and paper products
22 Publishing, printing and reproduction of record media
32 p_c 231 Manufacture of coke oven products
232 Manufacture of refined petroleum products 233 Processing of nuclear fuel
33 crp 241 Manufacture of basic chemicals
242 Manufacture of other chemical products
25 Manufacture of rubber and plastic products
34 nmm 26 Manufacture of other non-metallic mineral products
35 i_s 271 Manufacture of basic iron and steel
2731 Casting of iron and steel
36 nfm 272 Manufacture of basic precious and non-ferrous metals 2732 Casting of non-ferrous metals
37 fmp 28 Manufacture of fabricated metal products, except machinery and
equipment
38 mvh 34 Manufacture of motor vehicles, trailers and semi-trailers
39 otn 35 Manufacture of other transport equipment
40 ele 30 Manufacture of office, accounting and computing machinery
32 Manufacture of radio, television and communication equipment and
apparatus
41 ome 29 Manufacture of machinery and equipment n.e.c.
31 Manufacture of electrical machinery and apparatus n.e.c.
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Table 2.4 GSC2 Sectors defined by Reference to the ISIC, Rev. 3
GSC2 Code ISIC3 Description No. Code 33 Manufacture of medical, precision and optical instruments, watches and
clocks
42 omf 36 Manufacturing n.e.c.
37 Recycling
43 ely 401 Production, collection and distribution of electricity
44 gdt 402 Manufacture of gas; distribution of gaseous fuels through mains 403 Steam and hot water supply
45 wtr 41 Collection, purification and distribution of water
46 cns 45 Construction
47 trd 50 Sales, maintenance and repair of motor vehicles and motorcycles; retail
sale of automotive fuel
51 Wholesale trade and commission trade, except of motor vehicles and
motorcycles
521 Non-specialized retail trade in stores
522 Retail sale of food, beverages and tobacco in specialized stores
523 Other retail trade of new goods in specialized stores
524 Retail sale of second-hand goods in stores
525 Retail trade not in stores 526 Repair of personal and household goods
55 Hotels and restaurants
48 otp 60 Land transport; transport via pipelines
63 Supporting and auxiliary transport activities; activities of travel agencies
49 wtp 61 Water transport
50 atp 62 Air transport
51 cmn 64 Post and telecommunications
52 ofi 65 Financial intermediation, except insurance and pension funding
67 Activities auxiliary to financial intermediation
53 isr 66 Insurance and pension funding, except compulsory social security
54 obs 70 Real estate activities
711 Renting of transport equipment 712 Renting of other machinery and equipment
713 Renting of personal and household goods n.e.c.
72 Computer and related activities
73 Research and development
74 Other business activities
55 ros 92 Recreational, cultural and sporting activities
93 Other service activities
95 Private households with employed persons
56 osg 75 Public administration and defense; compulsory social security
80 Education
85 Health and social work
90 Sewage and refuse disposal, sanitation and similar activities 91 Activities of membership organizations n.e.c.
99 Extra-territorial organizations and bodies
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Table 2.4 GSC2 Sectors defined by Reference to the ISIC, Rev. 3
GSC2 Code ISIC3 Description No. Code
57 dwe n.a. n.a.
n.a. Not available
n.e.c. Not elsewhere classified
2.3 GTAP Parameters File The parameters file contains invariant behavioral parameters and switch parameters, arranged in
ten arrays, as listed in table 2.5. A detailed description of the parameters and their source data is
available in chapter 14 of the documentation.
Table 2.5 Arrays in the GTAP Parameters File
Name Dimension Description
ESBD t elasticity of substitution between domestic product and imports
ESBM t elasticity of substitution between imports from different regions
ESBT t elasticity of substitution between composite intermediate inputs
ESBV t elasticity of substitution between primary factors in the production of value-
Added
ETRE s elasticity of transformation between industries for sluggish primary factor
Endowments
INCP t × r expansion parameter in the CDE consumer demand system
RDLT 1 binary switch mechanism of allocating investment funds
RFLX r flexibility of expected net rate of return on capital stock with respect to
Investment
SLUG e sluggish-mobile switch parameter
SUBP t × r substitution parameter in the CDE consumer demand system
PYRT 5 × 5 × 12 × 38 domestic support payment rates with appropriate bases in %
PAYD 5 × 5 × 12 × 38 domestic support payments of different types/bases in millions of USD
e Number of factor endowments
r Number of regions
s Number of primary factors not perfectly mobile between industries
t Number of tradable commodities (sectors)
New headers PYRT and PAYD are not parameters, but are data that are meant for
display/information and not for aggregation or direct use in the standard GTAP Model. The reason
for not including this in the standard data file is that they are neither readable by the model nor are
they meant for aggregation, since they are available merely for a subset of GTAP sectors (12) and
regions (38). PYRT is the OECD domestic support payment rates, shown by types of decoupling,
types of payment bases and sectors. PAYD shows the corresponding payments in millions of USD.
The decoupling types, as defined by OECD are as follows:
1. Single Commodity Transfers (SCT): These are targeted at specific sectors.
2. Group Commodity Transfers (GCT): These are targeted at groups of sectors.
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3. All Commodity Transfers (ACT): These are not targeted at any specific sector, but rather
transferred to entire agricultural sector. But these are still defined in terms of appropriate
bases. In other words, these are targeted at different inputs (intermediate input or factors) or
output specifically.
4. Other Transfers to Producers (OTP): These are completely decoupled with sectors as well
as inputs/output. These payments are transferred to the entire agricultural sector, without
specifically targeting at inputs or output.
5. Total Transfer Payments: This is the sum total of the above payments.
2.4 GTAP Data File The main data file consists of dollar values of flows of goods and services listed in table 2.6.
Table 2.6 Data Arrays in the GTAP 8 Data File
Name Dimension Description
ADRV t × r × r anti-dumping duty
DPSM r sum of distribution parameters in the household demand system
EVFA e × p × r primary factor purchases, at agents’ prices
EVOA e × r primary factor sales, at agents’ prices
FBEP e × p × r factor-based subsidies
FTRV e x p x r factor employment tax revenue
ISEP t × p × r × d intermediate input subsidies
MFRV t × r × r export tax equivalent of MFA quota premium
OSEP t × r ordinary output subsidy
POP r Population
PURV t × r × r export tax equivalent of price undertakings
SAVE r net saving, by region
TFRV t × r × r ordinary import duty
TVOM t × r sales of domestic product, at market prices
VDEP r capital depreciation
VDFA t × p × r domestic purchases, by firms, at agents’ prices
VDFM t × p × r domestic purchases, by firms, at market prices
VDGA t × r domestic purchases, by government, at agents’ prices
VDGM t × r domestic purchases, by government, at market prices
VDPA t × r domestic purchases, by households, at agents’ prices
VDPM t × r domestic purchases, by households, at market prices
VFM e × p × r primary factor purchases, by households, at market prices
Table 2.6 Data Arrays in the GTAP 8 Data File
Name Dimension Description
VIFA t × p × r import purchases, by firms, at agents’ prices
VIFM t × p × r import purchases, by firms, at market prices
VIGA t × r import purchases, by government, at agents’ prices
VIGM t × r import purchases, by government, at market prices
VIMS t × r × r imports, at market prices
VIPA t × r import purchases, by households, at agents’ prices
VIPM t × r import purchases, by households, at market prices
VIWS t × r × r imports, at world prices
VKB r capital stock
VRRV t × r × r export subsidy equivalent of voluntary export restraints
VST t × r margin exports
VTWR m × t × r × r margins by margin commodity
VXMD t × r × r non-margin exports, at market prices
VXWD t × r × r non-margin exports, at world prices
XTRV t × r × r
ordinary export
tax
VTSS 2× t × r × r value of imports in world prices + specific & advalorem tariff revenue
d = number of trade directions (exports, imports);
e = number of endowment commodities (primary factors);
m = number of margin commodities (sectors);
p = number of produced commodities;
r = number of regions;
t = number of tradable commodities (sectors)
The main data file also includes arrays summarizing the value of revenue generated from
protection measures and the subsidy expenditures related to support measures. These values are
all in millions of (2004 and 2007) U.S. dollars in the GTAP 8 Data Base.
The protection data is available in the GTAP data file both implicitly and explicitly.
Implicitly, the rates of different protection instruments may be calculated from two matrices which
refer to two different valuations of the same value flow. Table 2.7 shows the protection measures
that may be calculated from the data base and the arrays associated with these measures. The import
and export duties calculated from the data base are the comprehensive measures, described in the
detailed documentation.
The protection data explicitly declared in the GTAP data file are the revenue values or
expenditure values associated with the protection measures. The revenues/expenditures from the
different types of import and export instruments are given in separate arrays. These explicit arrays
are TFRV, XTRV, MFRV, ADRV, PURV, VRRV, OSEP, ISEP, and FBEP in table 2.6. VTSS is
a new header introduced in GTAP 8 Data Base, showing the value of imports in world prices
including the tariff revenue data by its components, two of them, namely, specific and ad valorem
tariff. Protection rates, including the rTTS rates that correspond to the new data in VTSS, are also
explicitly summarized in a tax rates file.
Table 2.7 Implicit Protection in the GTAP Data File
Protection Measures Formula* Description
Import Duties VIMS / VIWS power of import tax (comprehensive)
Export Duties VXMD / VXWD power of export tax (comprehensive)
Output Subsidies VOA / VOM power of output tax Intermediate Input
Subsidies
Domestic Inputs
Imported Inputs
VDFA / VDFM
VIFA / VIFM
power of domestic intermediate input tax
power of imported intermediate input tax
Factor-Based Payments EVFA / (VFM + FTRV) power of factor-based subsidies * The difference between the two value flows gives value of revenue or subsidy expenditure.
2.5 GTAP Energy Volumes Data File As shown in table 2.8, the energy volumes data file includes three arrays reporting the volume of
energy purchases by firms and by households and also the volume of bilateral trade in energy
products, in millions of tons of oil equivalents. The headers in this file have changed in version 8.
The detailed documentation available online describes the construction of the energy data.
Table 2.8 Arrays in the Energy Volumes Data File
Name Dimension Description
EC n energy commodities
EDF n × p × r volume of domestic input purchases by firms (Mtoe)
EDP n × r volume of domestic purchases by households (Mtoe)
EDG n × r volume of domestic purchases by government (Mtoe)
EIF n × p × r volume of imported input purchases by firms (Mtoe)
EIP n × r volume of imported purchases by households (Mtoe)
EIG n × r volume of imported purchases by government (Mtoe)
EXI n × r × r volume of bilateral trade (Mtoe) n Number of energy commodities (sectors)
r Number of regions
p Number of produced commodities (sectors)
2.6 GTAP CO2 Emissions Data File This is a new file being made available in GTAP 8 data Base. In the previous versions, this was
part of the satellite dataset. In the current version the energy volumes data file explained above
was modified in its structure mainly to accommodate this new structure of CO2 emissions
dataset, described in table 2.9.
Table 2.9 Arrays in the CO2 Emissions Data File
Name Dimension Description
FC n fuel commodities
MDF n × p × r emissions from domestic input purchases by firms (Mt CO2)
MDP n × r emissions from domestic purchases by households (Mt CO2)
MDG n × r emissions from domestic purchases by government (Mt CO2)
MIF n × p × r emissions from imported input purchases by firms (Mt CO2)
MIP n × r emissions from imported purchases by households (Mt CO2)
MIG n × r emissions from imported purchases by government (Mt CO2)
n Number of fuel commodities
r Number of regions
p Number of produced commodities (sectors)
2.7 GTAP 8 Data Packages The GTAP 8 Data Base is available through two aggregation packages, FlexAgg and GTAPAgg
(see chapters 4 and 5). A license file that relaxes the 10-sector by 10-region default constraint on
the GTAPAgg package is provided to purchasers.
GTAP Data Package pricing and order information, as well as the online documentation,
are available on the GTAP website at: http://www.gtap.agecon.purdue.edu/databases/.
Users may also be interested in the RunGTAP software. RunGTAP is a graphical user
environment developed by Mark Horridge of the Centre of Policy Studies, Monash University, for
use in interactively solving the GTAP Model. RunGTAP allows the user to run simulations
interactively in a Windows environment using the GTAP general equilibrium model. RunGTAP is
freely available on the GTAP website at: http://www.gtap.agecon.purdue.edu/products/rungtap/.
